MATRIXSYNTH: VINTAGE ROLAND CR-78 CompuRhythm Drum Machine SN 842026

Sunday, November 05, 2017

VINTAGE ROLAND CR-78 CompuRhythm Drum Machine SN 842026

via this auction

"This is a classic piece of music history! A vintage Roland CR-78 CompuRhythm. This machine is in good working , it has been professionally serviced in the last couple months. Please see the end of listing for details on work done. The machine body is also in good condition- some wear to corners and 1 missing knob. Both details shown in up close pictures.

Service Description:
1. Cleaned up circuit board.
2. Re-capped both main cards as can caps leaking
3. Replaced corroded trigger connector, driver transistors, and resistors as originals were not accepting solder.
4. Wires added to bridge all traces between replacement connector pins and driver signals.
5. Cleaned other connectors and got all sounds to work from both the stored patterns and the programmer
6. Replaced frayed power cable with 3 pin grounded type
7. All functions working."

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